This paper deals with interrelationship between the use of new agricultural technology and socio-economic factors in Dhankuta municipality, eastern hills of Nepal. This area offers a lot of resources; here the researcher examines the role of socio-economic factors to diffuse new technology in this area too. Relevant data were obtained from both primary and secondary sources. Primary data were collected from the interview, key informant survey and field observation. For this, approximately 33 percent sample households (166hhs) were selected out of total 506 households from ward no. 3 of the municipality. Similarly, secondary data were gathered from various books, journals and official records. To identify the mutual relationship between these components, mathematical tools chi-square test and Karl Pearson's correlation were performed. The study reveals that there is a close relationship between the use of new agricultural inputs and socio-economic factors of the study area. The relationship seems highly significant between age, training, farm size, service of agriculture service center and membership of farmers in organization and adoption of new agricultural technologies however; the inter-connection with sex, ethnicity and education of the farmers reveals less significant among these factors. Nowadays, more than 78 percent (130hhs) farmers are using such inputs in the study area and the remarkable change in crop production can easily be seen due to the impact such innovations.
{"title":"Interrelationship between the Use of New Agricultural Inputs and Socio-economic Factors","authors":"Shyam Wagle","doi":"10.3126/jrdn.v5i1.50097","DOIUrl":"https://doi.org/10.3126/jrdn.v5i1.50097","url":null,"abstract":"This paper deals with interrelationship between the use of new agricultural technology and socio-economic factors in Dhankuta municipality, eastern hills of Nepal. This area offers a lot of resources; here the researcher examines the role of socio-economic factors to diffuse new technology in this area too. Relevant data were obtained from both primary and secondary sources. Primary data were collected from the interview, key informant survey and field observation. For this, approximately 33 percent sample households (166hhs) were selected out of total 506 households from ward no. 3 of the municipality. Similarly, secondary data were gathered from various books, journals and official records. To identify the mutual relationship between these components, mathematical tools chi-square test and Karl Pearson's correlation were performed. The study reveals that there is a close relationship between the use of new agricultural inputs and socio-economic factors of the study area. The relationship seems highly significant between age, training, farm size, service of agriculture service center and membership of farmers in organization and adoption of new agricultural technologies however; the inter-connection with sex, ethnicity and education of the farmers reveals less significant among these factors. Nowadays, more than 78 percent (130hhs) farmers are using such inputs in the study area and the remarkable change in crop production can easily be seen due to the impact such innovations.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"22 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87495677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Antenatal and postnatal care of mother is so important for the health of mother as well as the baby. Antenatal and postnatal care services are amongst the recommended interventions aimed at preventing maternal and newborn deaths worldwide. The objective of this research study was to assess the antenatal and postnatal care and practice of the Danuwar community at Panchkhal. This study was conducted in Panchkhal ward no 8, Pipaltar, Kavre. A descriptive study design was used for the study. There were total 198households in Pipaltar ward no eight. 50 percent households (99 households) were taken through simple random sampling procedure. The respondents were married Danuwar women aged from 15-49 either pregnant or having children. Only one respondent was taken from each sample household. Interview schedule were used to collect the data. The finding of the study revealed that majority of the respondents (66.67%) women had health checked up during pregnancy. Rest of them had not checked up health because of lack of knowledge, shyness and lack of time. Most of the pregnant women faced vomiting, abdominal pain, weakness, bleeding, backache, tiredness health complication during the period of pregnancy. Most of the pregnant women (68.69%) had taken T.T. injection and normal diet during pregnancy. Almost (92.93%) women were kept at unsafe places after delivery because of the custom and most of the Danuwar women (97.98%) had no practice of going to health center for health check-up after delivery. Almost all of the Danuwar women consumed ‘Juwano’ soup, meat, ghee in the period of postnatal (within 6 weeks after delivery).
{"title":"Antenatal and Postnatal Care among Women of the Danuwar Community at Panchkhal","authors":"B. Kafle","doi":"10.3126/jrdn.v5i1.50092","DOIUrl":"https://doi.org/10.3126/jrdn.v5i1.50092","url":null,"abstract":"Antenatal and postnatal care of mother is so important for the health of mother as well as the baby. Antenatal and postnatal care services are amongst the recommended interventions aimed at preventing maternal and newborn deaths worldwide. The objective of this research study was to assess the antenatal and postnatal care and practice of the Danuwar community at Panchkhal. This study was conducted in Panchkhal ward no 8, Pipaltar, Kavre. A descriptive study design was used for the study. There were total 198households in Pipaltar ward no eight. 50 percent households (99 households) were taken through simple random sampling procedure. The respondents were married Danuwar women aged from 15-49 either pregnant or having children. Only one respondent was taken from each sample household. Interview schedule were used to collect the data. The finding of the study revealed that majority of the respondents (66.67%) women had health checked up during pregnancy. Rest of them had not checked up health because of lack of knowledge, shyness and lack of time. Most of the pregnant women faced vomiting, abdominal pain, weakness, bleeding, backache, tiredness health complication during the period of pregnancy. Most of the pregnant women (68.69%) had taken T.T. injection and normal diet during pregnancy. Almost (92.93%) women were kept at unsafe places after delivery because of the custom and most of the Danuwar women (97.98%) had no practice of going to health center for health check-up after delivery. Almost all of the Danuwar women consumed ‘Juwano’ soup, meat, ghee in the period of postnatal (within 6 weeks after delivery).","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"59 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87260601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Children are at risk for injury because of their normal curiosity, impulsiveness, andesine to master new skills and imitate adult behavior from an early age. Injuries are the first leading but predictable, avoidable and preventable cause of morbidity and mortality among under-five-year-old children worldwide. The objective of the study was to find out the Mothers’ awareness on prevention of home accidents among children in a community. A descriptive cross sectional research design was applied. Study was conducted in community of ward number 8 at Mahalaxmi municipality in Lalitpur district. No probability, purposive sampling technique was used to select 92 mothers of under than five children. Semi structured interview schedule was used to collect the data. The data was entered in SPSS 16 version and was analyzed by both descriptive statistics like frequency, percentage, mean, median, standard deviation and inferential statistics i.e. Chi-Square test. The finding of the study revealed that more than half (58.7%) respondents had good awareness and nearly half (41.3 %) had average awareness on home accidents. This study also showed that the type of family of respondents was significantly associated with level of awareness of respondents (p =0.020). Most of the respondents (83.7%) knew about prevention of home accidents from radio. This study concluded that about half of the mothers had average awareness on prevention of home accidents among children. So, education programmes to mothers of under five children to enhance their knowledge and increase awareness on accident prevention measures through mass media is needful.
{"title":"Mothers’ Awareness on Prevention of Home Accidents among Children in a Community","authors":"Bhagawaty Kalikotay, Rabina Rijal","doi":"10.3126/jrdn.v5i1.50090","DOIUrl":"https://doi.org/10.3126/jrdn.v5i1.50090","url":null,"abstract":"Children are at risk for injury because of their normal curiosity, impulsiveness, andesine to master new skills and imitate adult behavior from an early age. Injuries are the first leading but predictable, avoidable and preventable cause of morbidity and mortality among under-five-year-old children worldwide. The objective of the study was to find out the Mothers’ awareness on prevention of home accidents among children in a community. A descriptive cross sectional research design was applied. Study was conducted in community of ward number 8 at Mahalaxmi municipality in Lalitpur district. No probability, purposive sampling technique was used to select 92 mothers of under than five children. Semi structured interview schedule was used to collect the data. The data was entered in SPSS 16 version and was analyzed by both descriptive statistics like frequency, percentage, mean, median, standard deviation and inferential statistics i.e. Chi-Square test. The finding of the study revealed that more than half (58.7%) respondents had good awareness and nearly half (41.3 %) had average awareness on home accidents. This study also showed that the type of family of respondents was significantly associated with level of awareness of respondents (p =0.020). Most of the respondents (83.7%) knew about prevention of home accidents from radio. This study concluded that about half of the mothers had average awareness on prevention of home accidents among children. So, education programmes to mothers of under five children to enhance their knowledge and increase awareness on accident prevention measures through mass media is needful.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"81 1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74598202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article deals with the impact of good governance on school performance in Nepal. Good governance and its impacts on school performance is a burning as well as searching issue in the field of the educational sector of Nepal. The purpose is to explore and to discuss the findings of the impact of good governance on school performance through critical analysis of the literature review. This article is based entirely on the secondary sources. The finding of the study is that the good governance practices play the significant role in school performance in Nepal. Further, other major findings of this review include low school performance, less participation of stakeholders, lack of transparency and accountability, and corruption in the education sector. The reason for the low performance of schools in Nepal is the lack of good governance. If we adopt good governance practice in education, we can easily ensure/achieve a better school; better performance is the implications of this literature review.
{"title":"Article on Impact of Good Governance on School Performance of Nepal","authors":"Bimal P. Nepal","doi":"10.3126/jrdn.v5i1.50091","DOIUrl":"https://doi.org/10.3126/jrdn.v5i1.50091","url":null,"abstract":"This article deals with the impact of good governance on school performance in Nepal. Good governance and its impacts on school performance is a burning as well as searching issue in the field of the educational sector of Nepal. The purpose is to explore and to discuss the findings of the impact of good governance on school performance through critical analysis of the literature review. This article is based entirely on the secondary sources. The finding of the study is that the good governance practices play the significant role in school performance in Nepal. Further, other major findings of this review include low school performance, less participation of stakeholders, lack of transparency and accountability, and corruption in the education sector. The reason for the low performance of schools in Nepal is the lack of good governance. If we adopt good governance practice in education, we can easily ensure/achieve a better school; better performance is the implications of this literature review.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"17 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86174091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article concerns pedagogical practices of schools to meet objectives of the curriculum and provide learning experiences to the students. This article aims to explore teachers’ ways of carrying out classroom practices and to locate how the constructivist perspective could foster wider learning experiences of learners. We conducted an ethnographic field study - in one of the schools located in Ithaki Sub-metropolitan, Sunsari district – which involves a three-day visit to the school and continuous observation of a particular class to generate the data. Theoretically, this paper focuses on the constructivist perspective to understand the classroom practices of school teachers and locate them to conceptualize the school pedagogy. We highlight that the current school practice, the school teachers are adopting, is a traditionally dominant approach that strongly upholds “the jug to the mug concept” – the teacher as a jug that pours knowledge and information as a form of water to an empty mug as a student. We argue that teachers' traditionally based classroom practice is one of the responsible factors for not shifting Nepalese classroom practices into student-centered or reciprocal classroom practices that embrace the constructivist paradigm. This paper unveils teacher-student power-relations, which is fueling to promote the traditionally focused classroom practices that undermine the possibility of multiplicity in knowledge construction.
{"title":"Understanding the Nepali Classroom Practices: A Constructivist Perspective","authors":"D. Bhattarai, H. Basnet","doi":"10.3126/jrdn.v5i1.50093","DOIUrl":"https://doi.org/10.3126/jrdn.v5i1.50093","url":null,"abstract":"This article concerns pedagogical practices of schools to meet objectives of the curriculum and provide learning experiences to the students. This article aims to explore teachers’ ways of carrying out classroom practices and to locate how the constructivist perspective could foster wider learning experiences of learners. We conducted an ethnographic field study - in one of the schools located in Ithaki Sub-metropolitan, Sunsari district – which involves a three-day visit to the school and continuous observation of a particular class to generate the data. Theoretically, this paper focuses on the constructivist perspective to understand the classroom practices of school teachers and locate them to conceptualize the school pedagogy. We highlight that the current school practice, the school teachers are adopting, is a traditionally dominant approach that strongly upholds “the jug to the mug concept” – the teacher as a jug that pours knowledge and information as a form of water to an empty mug as a student. We argue that teachers' traditionally based classroom practice is one of the responsible factors for not shifting Nepalese classroom practices into student-centered or reciprocal classroom practices that embrace the constructivist paradigm. This paper unveils teacher-student power-relations, which is fueling to promote the traditionally focused classroom practices that undermine the possibility of multiplicity in knowledge construction.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"7 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87684547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Solid waste is global problem relating to environment, society and economics. Waste management is challenging issue as the quantity has been increasing with increase of population, urbanization and economic status. Some dozens of printed and online published books, journals, dissertations, website of agencies etc. were reviewed and by making outline and following guideline this article was prepared. It is found that the waste production varies from 0.25Kg to 1.38 Kg per capita per day in developing countries. In south South American countries it was recorded 1.07 Kg/capita/day, in Asian countries 0.4 to 1.62Kg/capita/day and in African region it was found 0.49 Kg/capita/day of waste production. The waste contains mostly biodegradable (50% to 80%). The collection system was very poor and from rural area only 10% to 20% waste and in urban area 44% to 90% of total produced waste was carried to collecting and management system. The common waste management’s adopted in developing countries were open dumping, landfill site, composting, incineration and open burning etc. From 18% to 92% of waste were found to dumping. In east pacific region 46% and in American countries 68.5% of total waste was carried to landfill site. The use of incinerator is scarcely found. Only in few countries well managed composting plants could be observed. Some landfill sites and incinerating plant shave generated electricity, biogas, brickets etc. Some pointed research gaps in this field are waste management and biodiversity, medicinal and hazardous waste management, vermicomposting etc. It can be recommended that for the waste management public awareness, participation of locals, application of reduction, reuse and recycling concept, waste management inside house premise, modernization and scientific management of solid wastes. Further researches are needed in different aspects of waste and management for the complete solution.
{"title":"Investigation on Solid Waste Management in Developing Countries","authors":"R. Adhikari","doi":"10.3126/jrdn.v5i1.50095","DOIUrl":"https://doi.org/10.3126/jrdn.v5i1.50095","url":null,"abstract":"Solid waste is global problem relating to environment, society and economics. Waste management is challenging issue as the quantity has been increasing with increase of population, urbanization and economic status. Some dozens of printed and online published books, journals, dissertations, website of agencies etc. were reviewed and by making outline and following guideline this article was prepared. It is found that the waste production varies from 0.25Kg to 1.38 Kg per capita per day in developing countries. In south South American countries it was recorded 1.07 Kg/capita/day, in Asian countries 0.4 to 1.62Kg/capita/day and in African region it was found 0.49 Kg/capita/day of waste production. The waste contains mostly biodegradable (50% to 80%). The collection system was very poor and from rural area only 10% to 20% waste and in urban area 44% to 90% of total produced waste was carried to collecting and management system. The common waste management’s adopted in developing countries were open dumping, landfill site, composting, incineration and open burning etc. From 18% to 92% of waste were found to dumping. In east pacific region 46% and in American countries 68.5% of total waste was carried to landfill site. The use of incinerator is scarcely found. Only in few countries well managed composting plants could be observed. Some landfill sites and incinerating plant shave generated electricity, biogas, brickets etc. Some pointed research gaps in this field are waste management and biodiversity, medicinal and hazardous waste management, vermicomposting etc. It can be recommended that for the waste management public awareness, participation of locals, application of reduction, reuse and recycling concept, waste management inside house premise, modernization and scientific management of solid wastes. Further researches are needed in different aspects of waste and management for the complete solution.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"105 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73030085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-10DOI: 10.35429/jrd.2022.22.8.1.5
Uriel Yosafat AGUIRRE-LÓPEZ, L. Melo-Máximo, Luis Fidel IBARRA-MADRID, Celia Massiel HERNÁNDEZ-HERNÁNDEZ
Catastrophic carburization (metal dusting) is one of the problems with the greatest impact on the petrochemical and direct iron reduction industry. This work shows the synthesis of chromium oxide (Cr2O3) coatings on 316L steel as a protective layer to prevent and/or delay material degradation. In this work, the Physical Vapor Deposition (PVD) method will be used, since it is a technique that allows the control of the atmosphere in which the deposition is being carried out, forming high quality thin films, with excellent adherence to the substrate, thus improving its surface properties. Thin films with thicknesses less than one micrometer were obtained, which were subjected to corrosion tests by thermogravimetry in an atmosphere of CH4 at 800°C for 15 minutes and 20 hours, scanning electron microscopy and elemental quantification. The coatings obtained showed an improvement in their resistance to corrosion in critical atmospheric conditions according to the graphs obtained in the thermogravimetry test, observing a lower weight gain compared to the uncoated sample.
{"title":"Thermogravimetric study of 316L steel coated by physical deposit in vapor deposition phase (PVD)","authors":"Uriel Yosafat AGUIRRE-LÓPEZ, L. Melo-Máximo, Luis Fidel IBARRA-MADRID, Celia Massiel HERNÁNDEZ-HERNÁNDEZ","doi":"10.35429/jrd.2022.22.8.1.5","DOIUrl":"https://doi.org/10.35429/jrd.2022.22.8.1.5","url":null,"abstract":"Catastrophic carburization (metal dusting) is one of the problems with the greatest impact on the petrochemical and direct iron reduction industry. This work shows the synthesis of chromium oxide (Cr2O3) coatings on 316L steel as a protective layer to prevent and/or delay material degradation. In this work, the Physical Vapor Deposition (PVD) method will be used, since it is a technique that allows the control of the atmosphere in which the deposition is being carried out, forming high quality thin films, with excellent adherence to the substrate, thus improving its surface properties. Thin films with thicknesses less than one micrometer were obtained, which were subjected to corrosion tests by thermogravimetry in an atmosphere of CH4 at 800°C for 15 minutes and 20 hours, scanning electron microscopy and elemental quantification. The coatings obtained showed an improvement in their resistance to corrosion in critical atmospheric conditions according to the graphs obtained in the thermogravimetry test, observing a lower weight gain compared to the uncoated sample.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"10 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87855164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.35429/jrd.2022.21.8.14.20
Iván Vera-Romero, José MARTÍNEZ-REYES, V. M. MÉNDEZ-ÁBREGO
This article shows the simulation results of an organic Rankine cycle (ORC) operating with the R134a working fluid and a Kalina Cycle operating with the ammonia-water mixture in order to compare the results and detect the better performing cycle. The working conditions were attained through a field visit to the town of Los Negritos, Michoacán, where it was determined that it is a superficial low-enthalpy source. To conduct the simulations, the Software Engineering Equation Solver (EESTM) was employed. In the ORC, a net electric power output of 10.97 kWe was obtained with 4.58% cycle efficiency, while with the Kalina cycle, a net power output of 5.53 kWe was obtained along with an overall efficiency of 6.61%.
{"title":"Assessment of an organic Rankine cycle and a Kalina cycle for a single source of low-enthalpy geothermal heat","authors":"Iván Vera-Romero, José MARTÍNEZ-REYES, V. M. MÉNDEZ-ÁBREGO","doi":"10.35429/jrd.2022.21.8.14.20","DOIUrl":"https://doi.org/10.35429/jrd.2022.21.8.14.20","url":null,"abstract":"This article shows the simulation results of an organic Rankine cycle (ORC) operating with the R134a working fluid and a Kalina Cycle operating with the ammonia-water mixture in order to compare the results and detect the better performing cycle. The working conditions were attained through a field visit to the town of Los Negritos, Michoacán, where it was determined that it is a superficial low-enthalpy source. To conduct the simulations, the Software Engineering Equation Solver (EESTM) was employed. In the ORC, a net electric power output of 10.97 kWe was obtained with 4.58% cycle efficiency, while with the Kalina cycle, a net power output of 5.53 kWe was obtained along with an overall efficiency of 6.61%.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75415849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.35429/jrd.2022.21.8.21.27
Beatriz Martínez-Pérez, Ana Daniela OLIVANO-ESQUIVEL, Jorge FERNÁNDEZ-RETANA, Gustavo Vidal-Romero
In the present investigation was optimized and automated a prototype of an electrospinning system. In addition, the methodology for preparing the polymeric film with polycaprolactone micro and nanofibers (PCL) loaded with Neem extract was optimized as a proposal for the treatment of cervical cancer. Also, a UV-VIS spectrophotometric method was developed for the quantification of Neem extract encapsulated in PCL polymeric nanofibers through the formation of a colorimetric complex with FeCl3. The wavelength used to quantify the Neem extract was 423 nm. The prototype built allowed the formation of nanofibers loaded with Neem extract with a diameter of 22-71 nm in diameter. The encapsulation efficiency of the Neem extract was 78.4%.
{"title":"Design and automation of an electrospinning system to prepare micro and nanofibers. Case study: elaboration of polymeric micro and nanofibers for vaginal drug delivery","authors":"Beatriz Martínez-Pérez, Ana Daniela OLIVANO-ESQUIVEL, Jorge FERNÁNDEZ-RETANA, Gustavo Vidal-Romero","doi":"10.35429/jrd.2022.21.8.21.27","DOIUrl":"https://doi.org/10.35429/jrd.2022.21.8.21.27","url":null,"abstract":"In the present investigation was optimized and automated a prototype of an electrospinning system. In addition, the methodology for preparing the polymeric film with polycaprolactone micro and nanofibers (PCL) loaded with Neem extract was optimized as a proposal for the treatment of cervical cancer. Also, a UV-VIS spectrophotometric method was developed for the quantification of Neem extract encapsulated in PCL polymeric nanofibers through the formation of a colorimetric complex with FeCl3. The wavelength used to quantify the Neem extract was 423 nm. The prototype built allowed the formation of nanofibers loaded with Neem extract with a diameter of 22-71 nm in diameter. The encapsulation efficiency of the Neem extract was 78.4%.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"24 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90561658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-31DOI: 10.35429/jrd.2022.21.8.6.13
Víctor R. CASTAÑEDA-IBARRA, Luis-Fortino Cisneros-Sinencio, P. García-Vite, R. Castillo-Gutiérrez
In this paper, a design process for power directional couplers using dual conductor-backed coplanar waveguides (CBCPW), is presented. The proposed methodology is applied to the design of a 50 Ω impedance coupler with 10 dB coupling factor for a central frequency of 2.5 GHz. The resulting coupler is validated through simulation by obtaining its dispersion parameters using ANSYS High Frequency Structure Simulator (HFSS). From the analysis of the return loss, insertion loss and coupling factor, in a range of 1 to 4 GHz, it was found that the coupling factor complies with the design specification for frequencies from 2 to 3 GHz, with insertion losses between -1 and -2 dB around the center frequency and return losses of -15 dB.
{"title":"Design process for dual coplanar waveguide directional couplers for power transmission","authors":"Víctor R. CASTAÑEDA-IBARRA, Luis-Fortino Cisneros-Sinencio, P. García-Vite, R. Castillo-Gutiérrez","doi":"10.35429/jrd.2022.21.8.6.13","DOIUrl":"https://doi.org/10.35429/jrd.2022.21.8.6.13","url":null,"abstract":"In this paper, a design process for power directional couplers using dual conductor-backed coplanar waveguides (CBCPW), is presented. The proposed methodology is applied to the design of a 50 Ω impedance coupler with 10 dB coupling factor for a central frequency of 2.5 GHz. The resulting coupler is validated through simulation by obtaining its dispersion parameters using ANSYS High Frequency Structure Simulator (HFSS). From the analysis of the return loss, insertion loss and coupling factor, in a range of 1 to 4 GHz, it was found that the coupling factor complies with the design specification for frequencies from 2 to 3 GHz, with insertion losses between -1 and -2 dB around the center frequency and return losses of -15 dB.","PeriodicalId":55034,"journal":{"name":"IBM Journal of Research and Development","volume":"110 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82291960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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